Hybrid tea rose plant named `Jacsling`

ABSTRACT

A hybrid tea class rose plant having a bright red stable flower color; long, straight stems; vigorous, upright growth; good yield or cut flowers; good vase life; and thick, heavy petals.

The present invention relates to a new and distinct variety of roseplant of the Hybrid tea class which was originated by me by crossing thevariety KORlingo, U.S. Plant Pat. No. 5,846, with an unnamed seedling.

The primary objective of this breeding was to produce a new rose varietyhaving the excellent petal substance and bright red color of KORlingoand the longer stems of the unnamed seedling. The objective wassubstantially achieved along with other desirable improvements asevidenced by the following unique combination of characteristics whichare outstanding in the new variety and which distinguish it from itsparents, as well as from all other varieties of which I am aware:

1. Vigorous upright habit of growth;

2. Long, strong, straight stems;

3. Bright red, stable flower color;

4. Thick, heavy petal substance;

5. Good yield (175 to 200 stems per m²) and good vase life.

Asexual reproduction of this new variety by budding, as performed atWasco, Calif., shows that the foregoing characteristics and distinctionscome true to form and are established and transmitted through succeedingpropagations.

The accompanying illustration shows typical specimens of the vegetativegrowth and flowers of this new variety in different stages ofdevelopment, depicted in color as nearly true as it is reasonablypossible to make the same in a color illustration of this character.

The following is a detailed description of my new rose cultivar withcolor descriptions using terminology in accordance with the RoyalHorticultural Society (London) Colour Chart, except where ordinarydictionary significance of color is indicated.

Parentage:

Seed parent.--KORlingo, U.S. Pat. No. 5,846.

Pollen parent.--An unnamed seedling.

Classification:

Botanical.--Rosa hybrida.

Commercial.--Hybrid tea.

FLOWER

Observations made from specimens grown in a greenhouse environment inSomis, Calif., from January through June, 1992.

Blooming habit: Recurrent.

Bud:

Size.--2" when the petals start to unfurl.

Form.--Long, pointed ovoid.

Color.--When sepals first divide, bud color is Red Group 44A. When halfblown, the upper and lower sides of the petals are Red Group 44A.

Sepals.--Color: Green Group 138B. Surface texture: Covered with finehairs. There are three normally appendaged sepals. There are twounappendaged sepals with hairy edges.

Receptacle.--Color: Green Group 137B. Shape: Funnel. Size: Broad, 3/8"wide ×2/8" long. Surface: Smooth.

Peduncle.--Length: Medium, 3" to 31/2". Surface: Smooth with occasionalglands. Color: Medium green. Strength: Stiff, erect.

Bloom:

Size.--Large. Average open size is 41/2".

Borne.--Singly.

Stems.--Long, strong, 22-26".

Form.--When first open: High centered. Permanence: Outer petals curlback.

Petalage.--Number of petals under normal conditions: 25.

Color.--The upper and reverse sides of the petals are Red Group 44A. Thebases of the petals have a distinct yellow half moon at the point ofattachment (3/8"×3/8"). The major color on the upper side is Red Group44A.

Variegations.--None.

Discoloration.--The general tonality at the end of the first day: nochange. At the end of the third day: No change.

Fragrance.--Slight.

Petals:

Texture.--Thick, leathery.

Shape.--Round to slightly deltoid.

Form.--Tips slightly recurved.

Arrangement.--Imbricated, with no petaloids in the center.

Persistence.--Drop off cleanly.

Lastingness.--On the plant: Long, 5 to 6 days. As a cut flower: Long, 8to 9 days.

Reproductive Parts:

Anthers.--Size: Medium. Quantity: Many. Color: Light yellow.Arrangement: Regular around the styles.

Filaments.--Color: Reddish.

Pollen.--Color: Lemon yellow.

Styles.--Color: Reddish.

Stigmas.--Color: Greenish white.

Form: Bush.

Growth: Vigorous, upright and branching.

Foliage: Number of leaflets on normal mid-stem leaves: 5.

Size.--Large, 6"×4".

Quantity.--Abundant.

Color.--New foliage: Reddish. Old foliage: Dark green.

Leaflets:

Shape.--Pointed oval.

Texture.--Upper side: Smooth and semi-glossy.

Edge.--Serrated.

Serration.--Single and small.

Petiole Rachis.--Color: Green.

Petiole Underside.--Smooth.

Stipules.--Short.

Disease Resistance.--Susceptible to mildew under normal growingconditions in a greenhouse environment at Somis, Calif.

Wood:

New wood.--Color: Reddish. Bark: Smooth.

Old wood.--Color: Green. Bark: Smooth.

Prickles:

Quantity.--On main canes from base: Ordinary. On laterals from maincanes: Ordinary.

Form.--Medium, hooked slightly downward.

Color when young.--Red.

Small Prickles:

Quantity.--On main stalks: None. On laterals: None.

I claim:
 1. A new and distinct variety of rose plant of the hybrid teaclass, substantially as herein shown and described, characterizedparticularly as to novelty by the unique combination of its bright redstable flower color, its long, straight stems, its vigorous, uprightgrowth, its good yield of cut flowers, its good vase life and its thick,heavy petals.